According to The Hollywood Reporter, the two-hour pilot and potential primetime series (which is based off of the book of short stories of the same name by popular author Mary Higgins Clark) begins production in Vancouver this week. Blanchard will play attorney/PI Sandra “Sunday” O’Brien-Parker, whose relationship with her new husband/partner, Henry Parker (Mathison), lands the couple in the center of scandal. Wagner will play Blanchard’s character’s father, Danny. Clark’s real-life daughter, Carol, and granddaughter, Elizabeth, will also co-star.